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2013-07-02T05:09:56Z

‎Example: grammar

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{{Page/Header||}}

{{review|text=move?}}
= Deforming Geometry =

== Push/Pull ==
Similar to shrink/flatten, this transformation consists of translating all selected elements along the line joining their original position to the Average position of the points. All translations are of same value, and are controlled by the mouse. It results in something that looks a bit like the scale effect, but much more deforming.

Note that unlike the preceding ones, you can [[Doc:2.6/Manual/3D interaction/Transform Control/Axis Locking|lock]] this transformation on axis – even though this has no real interest (except perhaps with a “plane locking”…).

[[File:ShrinkFlatten1.png|thumb|left|200px|mesh before push/pull]]
[[File:PushPull1.png|thumb|left|200px|Pulled out using a negative value]]
[[File:PushPull2.png|thumb|left|200px|Pushed in using a positive value]]
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== Warp ==
{{RefBox
|mode={{Literal|Edit}} mode
|hotkey={{Shortcut|shift|W}}
|menu={{Menu|Mesh/Curve/Surface|Transform|Warp}}
|lang=en
}}
The {{Literal|Warp}} transformation is useful in very specific cases. It works by warping the selected elements around the 3D cursor (always the 3D cursor; it does not take into account the pivot point setting…). It is also view-dependent. The points that line up vertically with the cursor will remain in place. Each point's distance to the cursor's '''horizontal position''' corresponds to the radius it will be from the cursor after the tool has been activated. The tool will then wrap the point around the cursor. A value of 360 will wrap the mesh into a complete circle, so that the points furthest to the left and the right will line up with each other and the cursor position.

To use this tool, set the cursor in the view where the center should be. Activate the tool, then move the cursor or enter the value of the angle the mesh should be warped to.
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=== Example ===
A cylinder is warped into a semicircular shape

*Switch to top view and move the mesh away from the 3D cursor. This distance defines the radius of the warp.
*Place the mesh in {{Literal|Edit}} mode ({{Shortcut|tab}}) and press {{Shortcut|A}} to select all vertices. Press {{Shortcut|shift|W}} to activate the warp transform tool. Move the mouse left or right to interactively define the amount of warp.

{{clr}}
[[File:WarpTool1.png|thumb|left|220px|Cylinder before being warped.]]
[[File:WarpTool2.png|thumb|left|220px|Cylinder warped, using a small angle.]]
[[File:WarpTool3.png|thumb|left|220px|Warp using larger angle.]]
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== Shear ==
{{RefBox
|mode={{Literal|Edit}} mode
|hotkey={{Shortcut|ctrl|alt|shift|S}}
|menu={{Menu|Object/Mesh/Curve/Surface|Transform|Shear}}
|lang=en
}}
The {{Literal|Shear}} transformation applies a shearing on your selection of elements (in {{Literal|Edit}} mode, vertices/edges/control points/…). Like the other transform tools, it uses the view space, and is centered on the pivot point: the shear occurs along the view’s x-axis passing through the pivot point. Everything that is “above” this axis (i.e. has a positive y-axis position) will move (shear) in the same direction as your mouse pointer (but always parallel to the x-axis). And everything that is “below” this x-axis will move in the opposite direction. The further away from the x-axis an element is, the more it moves.

When the tool becomes active, move the mouse left to right to interactively control the shearing. To make the effect work on the vertical axis instead of the horizontal one, click the {{Shortcut|mmb}} and then move the mouse up or down. Alternatively enter a numerical value from 0 to infinity. To finish with the tool, press the {{Shortcut|lmb}}.
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[[File:Shear1.png|thumb|left|200px|before shearing]]
[[File:Shear2.png|thumb|left|200px|Horizonatl shearing]]
[[File:Shear3.png|thumb|left|200px|Vertical shearing]]

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== To Sphere ==
{{RefBox
|mode={{Literal|Edit}} modes
|menu={{Menu|Mesh/Curve/Surface|Transform|To Sphere}}
|hotkey={{Shortcut|shift|alt|S}}
|panel={{Literal|Mesh Tools}} ({{Literal|Editing}} context)
|lang=en
}}
This command “spherifies” the selected mesh elements. It does this by finding the average position of the elements, and moves them toward the average distance they are from this point. Using a value of 1 puts all of the vertices an equal distance from this point, creating a spherical shape.

When the tool becomes active, drag the mouse left or right to interactively control the effect, or type in a value from 0 to 1 to manually control it.
{{clr}}

=== Example ===
First, start with a [[Doc:2.6/Manual/Modeling/Meshes/Primitives#Cube|Cube]].
*Press {{Shortcut|tab}} to switch into {{Literal|Edit}} mode.
*Make sure all the vertices of the cube are selected by pressing {{Shortcut|A}} twice. Then, go to the {{Literal|Editing}} context by pressing {{Shortcut|F9}}. You should be able to see the {{Literal|Mesh Tools}} panel now.
*Subdivide the cube by pressing the {{Literal|Subdivide}} button in the {{Literal|Mesh Tools}} panel, or with {{Menu|{{Shortcut|W}}|Subdivide}}. You can do this as many times as you want; the more you subdivide, the smoother your sphere will be.
*Now, press {{Shortcut|shift|alt|S}} and move your mouse left or right to interactively control the proportion of “spherification” (or directly type a value, like “1.000” to achieve the same effect as below) – preferably using the {{Literal|Median Point}} pivot point!
*Alternatively, you can use the {{Literal|To Sphere}} button (in the {{Literal|Mesh Tools}} panel). Select “100” to make your sphere. Note that you ''should not move the 3D cursor'' – or you won’t get a sphere, but a piece of sphere…
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[[File:ToSphereBefore.png|thumb|left|300px|Subdivided cube, before]]

[[File:ToSphereAfter.png|thumb|left|300px|Subdivided cube, after warp]]
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